Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.3 T, 4L60E/M30REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2000 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESPERSONAL AUDIO LINK MODULE MALFUNCTIONCIRCUIT/SYSTEM TESTING
2006 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.3 T, 4L60E/M30
Circuit/System Testing
2006 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.3 T, 4L60E/M30SECTION Circuit/System Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the PAL module.
- Test for less than 5 Ξ© between terminal 9 and ground.
- If greater than specified value, test the ground circuit for an open/high resistance.
- Ignition ON, verify that a test lamp illuminates between terminal 16 and ground.
- If the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
- Ignition OFF, reconnect the harness connector at the PAL module.
- Disconnect the X2 harness connector at the radio.
- Radio ON, iPod sourced and playing, test for a varying mV AC voltage between the following signal circuit terminals listed below and ground.
- Left audio signal (+) - terminal 1
- Right audio signal (+) - terminal 2
- Left audio signal (-) - terminal 9
- Right audio signal (-) - terminal 10
- If the varying mV A/C voltage is not present, test the signal circuit for a short to voltage, short to ground, or an open/high resistance. If the circuits tests normal, replace the PAL module.
- If all circuits test normal, replace the radio.
PAL LED Indicator Malfunction
- Ignition OFF, disconnect the PAL harness connector.
- Ignition ON, verify that a test lamp illuminates between the PAL B+ circuit terminal and ground.
- If the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
- Verify that a test lamp illuminates at both PAL ground circuit terminals and B+.
- If the test lamp does not illuminate, test the ground circuits for an open/high resistance.
- If all circuits test normal, replace the PAL.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.